Gun-sight.



. v1 ATE1-rED AUG. 11,' 1903.-v

J. E. MBIGSSL H. G. JAKoBssoN.-

` GUNv SIGHT.

AP-YLXGATION FILED JUNE 1B. 190?.v y A 3 SHEETS-SHEET l.

' l PTENTBD AUG. 11,1908# J. P. MEIGS& H'. G.' JAIoBssoN. l

GUN SIGHT.

APPLICATION mmm .umn 1s'.' 19o1.

instaan stares PATENT onirica.

JOHN F. MEIGS AND HERMAN-G, JAKOBSSON, OF SOUTH BETHLHEM, PENNSYIiVANIA,

ASSIGNORS TO ilpzfrntnnsn iSTEEL COMPANY, or sotrn BETHLEHEM,PENNSYLVA-V NIA, A CORPORl TIOX OFFENNSYLVANIA.

To all'uzom it may concern:

Be it known that we, JOHN F.l MEIGsYa-ndV vation of the sight, partly insection; Fig. 3

is an elevation, a plate or side ofthe casing being removed; Fig. 4 is asectional view, on an enlarged scale, through a slightly dill'erent formof telescope from that `shown in Figs. 1 to 3, and Fig. 5 is an end'View of said telescope.

The casing A is so formed as to provide a chamber in which the mainadjusting parts of the device may be concealed by means of a removablecap-piece 2, and said casing is provided with a Harige or extensionwhich may be bolted by means of bolts 1, or otherwise, to any suitablepart of the gun or the gun mount. In bearings in the casing turns a studC upon which is an eccentric 3 receiving a strap l from which extends arod or arm D, the latter projecting upward through a block or cylinderB, the reduced ends of which tarn in bearings of the casing and itsAcap, and which block B 1s slotted to receive the end of the rod D, thelatter, as shown,

projecting upward and supporting any suitable telescope or sightingdevice G.

To the outer end oF the stud C is 'secured a blade or arm F and isprovided with suitable means for turning the stud as a knob 5, the axisof which is concentric with that of the stud, the `said blade beingmovable over a. curved and graduatedextension 6 of the cap piece, andthe blade having a beveled edge a: at the point where the blade crossesthe graduated portion -et the )late 6. The end of the blade F isprovided with a' clamping device F: by means of which the blade F may beclamped in any desired radial position upon the plate 6. Theeccentricity of the Specification of Letters Patent. Application fudJune 1s. 1907. serial nu. 379,664.

directly upon the rod D, as the latter may crm-SIGHT.

Patented Aug. 11, 1908. r

stud C must have such a relation tothe distance between the axes of thestd and of the rocking block B that in carrying the blade F over theentire scale on the plate 6 to an extent corresponding in this case to200 a rocking movement of 209, or the full elevation ot the gun, will beimparted to the block B and the telesco e G,

As above described, the apparatus is used by releasing the clamp F andswinging the blade or lever F by turning the knob 5 until it registersthe desired range on the graduation on the plate 6. -As this movement isef fected, the eccentric upon the stud C, turning with the knob,oscillates the rod D and the telescope G. Any deflection of the sightline may be had by mounting the telescope so that it may move laterallyupon the rod D by means of a screw K, the extent of shifting movementbeing indicated by a scale w upon the screw in its relation to a point 9upon the frame of the telescope. ever, the sighting arrangement shown inFig. 4 is used consisting of a metallic tube 10 having a guide at therear end for a dovetailed perforated slide 12, with a projection 13adapted to engage a screw 14, which may be turned by means of a handknob 15. By turning the knob the slide may be carried to one side or theother to var)v the position of the perforation v in respect to the crosshairs 18.

For fort and naval guns, no levels are required, but for field ormountain guns a. transverse level J is iixediv secured to the frame A toindicate the adjustment of the carriage transversely on its wheels; alevel M extending fore and aft is arranged at the side of the telescopeto accompany the movements of the latter and indica-te any change fromhorizontal.

By the above arrangement the parts may be positioned with greatrapidity, thus saving much 'of the time heretofore required in layingoil' the range; there is no lost motion or back lash, as there are nogears, while the parts ma)v be readily manufactured and ac- Preferably,howcurately fitted with a comparatively small amount of machming, andwlthout hand labor, and further, the device is strong and compact` asthe working parts are inclosed in a practically airtight compartment,and free from dust and the admission of moisture. It is not essential tomount the telescope shortened so -as simply to play in the rocking blockB, while the frame of the telescope ma)v be boltedl directly to thelatter so as to have only an oscillating movement. and no up and downmovement, as in the case of the construction shown.

While we'have shownand described an eccentric upon the stud, and a strapencircling the eccentric and connected with the bar D, it will beevident that an equivalent construction would be a crank shaft., thewrist pin of which enters an opening in the bar, or plays in the slot inthe b ar connect-ed to the rocking block.

Without limiting ourselves to the precise construction and arrangementofparts shown we claim:

1. The above described gun sight mounting consisting of a. casinginclosino' a chamber, a stud extending through said chamber and providedwithin the same with an eccentric, and with external means for turningthe stud, a strap encircling the eccentric and connected with an arm, arocking block mounted to rock in the casing and perforated for thereception of the said arm, and a telescope mounted upon the outer end ofsaid arm.

2. The combination of a hollow casing, its rocking block, provided withe slot, a stud extending through the casing and provided with aneccentric therein, a strap encircling the eccentric, and an armconnected with the strap and extending into the slot in the block, and atelcsco )e mounted to rock with the block, as set forth 3. Thecombination of the casing a stud extending into and from the same andprovided with an eccentric within the casing and with means for turningit from the outside of the casing, a strap encircling the eccentric, a.bar connected to thev strap, a rocking block slotted to receive saidbar, and a telescopev connected to rock with the block.

4. The combination of a casing, a stud extending into and from thecasing and provided with means exterior to the casing for turning thestud, a rocking block, a bar extendingtherefrom, and means forloscillating turning the stud, a rocking block, a bar extendingtherefrom, and means for oscillating said bar by the turning of thestud, it-telescope su ported to rock with the block, an arm or ladeextending from the stud, a scale upon the casing over which said armtravels, and means for clamping the arm in any position to which it maybe adjusted.

6. A casing consisting of the recessed part A, a cap for closing saidrecess, combined with a stud extending through the casing and having aknob at the outer end, a graduated scale upon the casing, and an armextending from the stud over saidrfscale, a rocking block at the top ofthe casing, a har extending from the said block downward, and means forswinging said bar by the rotation of the stud, and a telescope supportedto rock with the block.

In testimony whereof we affix our signa.- tures in presence of twoWitnesses.

JOHN F. MEIGS. HERMAN G. JAKOBSSON.

Witnesses:

EDWIN A. MILLER, HARVEY L. NIEss.

